US294406A

US294406A - Samuel p

Info

Publication number: US294406A
Authority: US
Publication date: 1884-03-04
Anticipated expiration: 1901-03-04

Description

(No Model.)

s. P. ROBINSON.

MOLDERS FLASK.

' Patented Mar. 4, 1884.

WITNESSES INVENTOR 1 My immediate object is to construct, with- Erica.

PATENT SAMUEL P. ROBINSON, OF PLAINFIELD, CONNECTICUT.

Mo LDERS FLASK- SPECIFICATION forming part of Letters a Patent No. 294,406, dated March 4, 1884.

Application filed January 9,1884. (No model.)

T0 aZZ whom it 71mg concern.-

Be it known that I, SAMUEL P. ROBINSON, of Plainfield, Windham county, Connecticut, have invented certain new and useful Improvements in Molders Flasks, which improvements are fully set forth and described in the following specification, reference being had to the accompanying drawings, in which Figure 1 is aperspective view of a two-part flask embodying my improvements. Fig. 2 is a detached view of my improved form of parting-strip, and Fig. 3 a sectional View on line on x of Fig. 1.

out the use of nails, a flask which shall be lighter, yet stronger, than flasks as commonly constructed, and which may be quickly taken. apart or assembled whenever necessary. This I accomplish by the use of a series of metallic corner-pieces of peculiar shape, as fully described hereinafter.

In Fig. 1, A represents the upper flask or cope, composed of the four sides a a a a". These pieces may be mitered at the corners, or may be allowed to abut, as at b.

B represents right-angular corner-pieces, made, preferably, of thin cast metal, having strengthening ribs c c, which on one side of the angle are perforated, as at d, to receive the guide-pins (3. It is my purpose to use four guide-pins, one for each corner, although two or three could be used with asatisfactory result. On theinner side of the flask, directly opposite to the corner-pieces B, are sheetmetal plates E. I

As a convenient and cheap means for secur-f ing the several parts of the *flaslctogether, I drill through the corner-piecesl3, the wooden sides of the flask, and the plates E, and, after having inserted bolts 6 from the inner side of the flask, I fasten the whole firmly together by nuts h, screwed onto the outer end of said bolts,the plates E forming, practically, washers under the heads of the bolts. Thus it will be seen that my flask is fastened rigidly together without the use of nails, and as my metallic corner-pieces are thoroughly stiffened by the ribs 0, it is impossible for the flask to warp or leave its original square or oblong shape, and as the sides may be made of a comparatively thin material, the flask is much restrips and projecting outward a distance somewhatless than the thicknessof the wooden On the inner sides of the sides of the flask. flask I provide holes is, corresponding in numher, size, and position with the pins 13. When it becomes necessary to use cross-bar F, one of the sides a is removedby unscrewing the nuts which secure said side. The cross-bar .is placed in position, as in Fig. l, the pins@' entering holes 70, when the side may be again returned to its place and secured by the bolts and nuts, as before described.

WVhen using a two-part flask, (cope and nowel,) the guide-pins should be long enough to pass downward into the perforated cornerpieces of the lower half, as shown at C, Fig. 1, and when a series of cases are used to build up a deep flask, the guide-pins should be long enough to extend through and support the en tire series.

' The guide pins 0 are held in place by wedges of wood, n, or other suitable material, which are entered between the body of the pin and the plate which forms a part of the angular corner-piece.

I prefer to use wedges of wood, as they are inclined to swell when dampened by themolding-sand, and remain firmly fixed in place until drivenout, and'if lost orbroken they are quickly and cheaply replaced.

Having thus described my invention, I claim as new and wish to secure by Letters Patent 1. In combination with the sides orwalls of a flask for molders use, a series of right-angular metallic corner-pieces, and a corresponding series of washer-plates, E, on the inner side of the flask, the plates E, the sides of the flask, and the metallic corner-pieces being clamped firmly together by bolts and nuts, as described, said corner-pieces being provided with strengthening ribs 0, for the purpose of retaining the flask in its rectangular form, as described.

2. In combination with the walls of a flask for mol'ders use, a series of right-angular metallie corner-pieces having strengthening 'ibs body of the guide-wire and the plate of the IO a, perforated, as at d, to receive guide-wires, corner-piece, saidvangular eorner-pieees being; whereby the upper and lower flasks, or a seclamped to the walls of the flask by bolts and ries of flasks, may be held in vertical align- I nuts, as and for the purpose specified. ment as and for the m1 )ose s eoified. i T

3. In combination witl l the galls of a flask, SAMUEL ROBINSOB' the angular corner-pieces B, with perforated Vitnesses: strengthening 'ibs, and the guidewire 0, held FRANK H. ALLEN, firmly in place by wedges entered between the I FRANK L. LATIIROP.